What should we do with regards to SVN?

Upgrade all the repos, and use hooks to ensure that people use 1.5+ clients Upgrade all the repos, and let 1.4 clients connect to them as well. Don't upgrade old repos (which are 1.4), just let the new ones be 1.6 repos Hide them in a dark dark place and convince people that SVN never existed in the first place. Repos? SVN? What are you talking about?

svn is the acronym of subversion. This is a place you can use to upload your addons to before releasing them to public, its has many usages; collaboration of several users on the same project, keep track of code changes, statictics etc